Watch Soap2Day. British author Agatha Christie (1890-1976) is the world's most translated author: her heroes, private detective Hercule Poirot and amateur sleuth Miss Marple, are known the world over. But who is the woman behind her bestsellers? A biographical search for clues, the unraveling of an iridescent personality whose existence and works were shaped by the tragic history of the 20th century: the eventful life of the Queen of Crime.